Door-spring



(No Model.)

W. C. SMITH.

' DOOR SPRING.

Patented June l16, 1891A.

5- 5 W/TNESSES: k IVE/170%y A TTU/MEV.

THE Nonna urns ce., mom-umu w UNITED STATES TILLIAM C. SMITH, OFIVARSAV, MISSOURI.

DOOR-SPRING.

SPECIFICATION forming part of Letters Patent N e. 454,078,

Application tiled J' une 26, 1890.

To all whom t may concern.-

Be it known that I, WILLIAM C. SMITH, a citizen of the United States,residing at Varsaw, in the countyof Benton and State of Missouri, haveinvented certain new and useful Improvements in Spring Door-Closers; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled intheart to which it appertains to make and use the same.

This invention appertains to door-springs, and has particular relationto the means for mounting and securing the spring to the door and to theeasement orjamb of the door, whereby simplicity and economy of.construction is attained with efficiency and satisfactory results.

The object of the invention is to utilize the spring in the dualcapacity as a means for opening the door and closing the same; also, toconstruct the fixtures so that there will be no interference betweenthem, thereby permitting the door to be opened toits fullest extent.

A further object of the invention is to 0bviate the slamming of the doorand the consequent jar and annoyance experienced thereby.

Another object of the invention is to hold the door open at any requiredangle and to improve the general construction of the device, whereby itsusefulness is increased to an eminent degree and it will be positive inits action.

The improvement tures and the consists of the novel feapeculiarconstructions and combinations of parts, which hereinafter will be morefully described and claimed, and which are shown in the annexeddrawings, in which- Figure l is a front view of lthe upper corner of adoor and its easement, showing the application of the invention. Fig. 2is a top plan View showing the door open and the spring about on adead-center by dotted lines. Fig. 3 is a perspective view of thedoor-spring and as much of the door and easement as seen in Fig. 1.

Similar letters denote corresponding parts in the several figures of thedrawings.

Referring to the parts by letter, A represents a rod, which is threadedfor a short disd tance from each end, and which is provided with nuts Band C at its respective ends, for

dated J'une 16,1891. Serial No.356,806. (No model.)

the purpose hereinafter more particularly referred te.

The bracket D is forked at itsl outer end, and between the parallel armsor members d d thereof is placed the nut or stop E, which is pivotallyconnected with the arms d d by the pivot c. This bracket is' designed tobe secured to the casementF of the door, and the reach D thereof isstraight. The bracket G differs from said braeketD only in having itsreach G curved, giving the bracket the form of an ogee in sideelevation, as most clearly shown in Fig. 3. The step II is held betweenthe parallel arms g-g of the bracket by the pivot 7i and forms anabutment for one end of the spring I, which is mounted on the rod A, theother end of the spring obtaining a purchase on and limited in itsmovement by the adjustable stop or nut C. The rod A passes looselythrough the stop II, and is provided on the end projecting beyond thestop H with the nut B and with the cushion or bumper J, the latter beingof rubber or other yielding lsubstance, or a spring. This bumper is heldbetween the nut B and the side of the bracket G and serves to preventthe door closing with a loud noise or bang.

In practice the bracket D is secured to the easement and the bracket Gto the door, and the parts are so adjusted as to close the door when itshall be opened a certain limit and released, and open the said doorafter it has passed the said limit. On opening the door the spring iscompressed, and if the door is released before it reaches a certainlimit the spring will expand and close the door. If the door be openedsufficiently wide to pass this limit, the expansion of the spring willthrow the door in the opposite direction and open it. By adjusting thestop B on the rod A the door may be held open at any located position ordesired angle. The tension of the springI may be increased or diminishedby adjusting the nut `C on the rod A.

The advantage derived from having the stop I-l loosely held in thebifurcated end of the ogee-curved reach is that in opening and closingthe door the spring-rod is permitted to have easy movement, and there isless liability of the same binding, as would happen at times if the saidstop were vIixed or rigid.

Having th us described my invention, what I IOO claim as new, and desireto secure by Letters Patent, is-

bracket to be secured to the easement, lnwng 5 :L straight reach andabifureated end, andthe bracket to be secured to the door having anogeeourved reach and bifuroated at its outer end, of stops pvotallyconnected with the bfurcztted ends, respectively, of said reaches, :L 1orod secured to the stop on the easementbracket and having its other endpassing loosely through the stop on the door-bracket, and the twoindependent springs mounted on the said rod, substantially as shown, forthe purpose set forth.

In testnlonywhereof I afx my sgnzttu re in presence of two witnesses.

TVILLIAM C. SMITH.

\Vtnesses:

E. EVERETT ELLIS, W. CURTIS LAMMOND.

